Magneto transport properties of Fe3O4 nanocontacts

被引：13

作者：

Versluijs, JJ ^{[1
]}

Coey, JMD ^{[1
]}

机构：

[1] Univ Dublin Trinity Coll, Dept Phys, Dublin 2, Ireland

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷 / 226-230期

关键词：

magnetic oxides; magnetoresistance; non-linear transport; domain wall;

D O I：

10.1016/S0304-8853(01)00246-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A piezo system is used to stabilize nanocontacts between two tiny crystals of the half metallic ferromagnet Fe3O4 and their current-voltage characteristics are measured in a magnetic field. The non-linear I-V curves are fitted to an I = GV + cV(3) law. Large negative magnetoresistance effects of as much as 85% in a field of 7mT are observed at room temperature. which increase with the resistance of the contact. The effect is discussed in terms of pinning a domain wall at the nanocontact. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：688 / 689

页数：2

共 6 条

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